Our seabirds

Britain and Ireland host globally important breeding populations of seabirds; in total over 8 million birds of 25 species at the time of the last national census. However, seabirds are facing growing pressures, from climate change to increasing exploitation of the marine environment, and are among the world’s most threatened groups of birds. BTO is working with partners both to support effective monitoring of seabirds and to assess the pressures they face, so that appropriate conservation solutions can be found.

Gannet. Duncan Wherrett

Monitoring seabirds in partnership

Of Britain and Ireland’s 25 breeding seabird species, six are on the UK Birds of Conservation Concern Red List and a further 18 are Amber-listed, while three and 19 are on the equivalent lists of Birds of Conservation Concern in Ireland. Monitoring these vulnerable populations is critical in informing national and international reporting on their status, as well as achieving targeted and effective conservation action. Citizen science plays a vital role in this monitoring. BTO is committed to working with its partners to identify and prioritise the developments that will ensure a robust and secure long-term future for seabird monitoring in these islands. By doing so, our aims are that seabird monitoring should provide:

Herring Gull. John Harding.
  • The highest quality evidence on the status of seabird populations (at site and national levels) that informs national and international policy;
  • An understanding of the responses of seabird populations to environmental change;
  • A growing constituency of people, across professional-amateur-public audiences, that are informed about and contributing to seabird monitoring and research.

BTO is a lead partner in the Seabird Monitoring Programme (SMP). The SMP collects annual data on the breeding abundance and productivity of seabirds from sample sites across Britain and Ireland. Through the BTO’s Retrapping for Adult Survival (RAS) scheme and studies at key sites, breeding seabirds are also ringed to provide additional information on annual survival rates. By investigating the factors that affect these demographic parameters, we are able to improve understanding of the drivers of seabird population change. The populations of seabird species in Britain and Ireland are assessed through periodic censuses and BTO is supporting the current seabird census – ‘Seabirds Count’.

Seabirds are facing growing pressures, from climate change to increasing exploitation of the marine environment, and are among the world’s most threatened groups of birds.  

Providing evidence to reduce impacts

The marine environment faces increasing pressure from development, including from offshore renewable energy projects, which are playing an increasing role in governments’ strategies to address climate change. Both in the UK and internationally, BTO works with government, NGO stakeholders and industry to ensure that the best possible scientific evidence and advice is available to assess the potential impacts on seabirds of such developments. BTO research has led to design improvements that reduce the risk of collision with wind turbines for seabirds. In this country, the data collected by the SMP, RAS and periodic censuses are invaluable in informing these assessments. Nevertheless, it may be difficult to detect the changes that may result from such developments through existing monitoring. BTO continues to work with others to improve our ability to detect such impacts, and understand how they may be best reduced.

Kittiwake. Richard Jackson

Our lost seabirds – help us secure their futures

We’re developing skilled volunteers to collect the data we need to inform scientific research and policy decisions. Without your support our seabirds could be lost forever.

Related Publications

Northern Ireland Seabird Report
Sandwich Tern. Philip Croft.

Northern Ireland Seabird Report 2020

2021 | Booth Jones, K.

Tern colonies around Northern Ireland had a catastrophic year. Despite this, many seabirds such as Guillemots had a good breeding season.

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Peer-reviewed papers
Wind farm, photograph by Tommy Holden

Towards a framework for quantifying the population-level consequences of anthropogenic pressures on the environment: The case of seabirds and windfarms

Assessing the impact of offshore wind farms on seabird populations

2017 | Cook, A.S.C.P. & Robinson, R.A.

Journal of Environmental Management

New research from the BTO has examined the different analytical tools used to assess the likely population-level impact of offshore wind farm developments on seabirds, finding that these vary widely and are influenced to a large extent by the assumptions made at the start of the analysis.

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